How fast is 5G from T-Mobile?

Technically. So, why are some 5G connections so slow? The first, and most impactful, reason is that the far-reaching 5G signals that have powered the vast majority of carrier rollouts in the US – especially from AT&T and, to a lesser extent, T-Mobile – have used low-band carrier frequencies.

T-Mobile’s average 5G download speeds across the eight cities clocked in at 261 Mbps – more than 2x faster than Verizon 5G and nearly 4x faster than AT&T 5G in those cities. Testers were able to get a 5G signal on T-Mobile 96% of the time, versus just 88% of the time with AT&T and a sad 59% of the time with Verizon 5G.

The pokey 8Mbps speed cap is no more.